FGRBW Series
Download our technical brochures:
Brochure for IEEE Bushings
Brochure for IEC Bushings
Performance
Main Characteristics for Transformer Bushings
1. Typical Performance
- Transformer bushing alone: FGRB(L)W Series
- Rated voltage for equipment: 40.5 to 252 kV
- Rated current (Ir): 100 to 3150 A
- Rated frequency: 50 Hz; 60 Hz
2. Environmental Conditions
- Ambient temperature: -50C to +45C
- Altitude: Altitude: <1000 m above sea level (for applications higher than 1000 m, special design is available. Please contact us.)
- Specific creepage distances: 25 to 31 mm/kV
3. Transformer Bushing Test Data
| Highest voltage for equipment Um kV(rms) | Rated power frequency withstand voltage 1 min 50/60 Hz kV (r.m.s) | Rated lightning impulse withstand voltage kV (peak) | Partial discharge pC |
| 40.5 | 95 | 200 | ≤ 5 |
| 72.5 | 140 | 325 | ≤ 5 |
| 126 | 230 | 550 | ≤ 5 |
| 252 | 460 | 950 | ≤ 5 |
| Highest voltage for equipment Um kV (r.m.s) | Rated lr (A) | ||
| 800 | 1000 ~ 1600 | 2000 ~ 2500 | |
| Cantilever test load (N) | |||
| 40.5 | 1000 | 1000 | 2000 |
| 72.5 | 1000 | 1250 | 2000 |
| 126 | 1250 | 1600 | 2500 |
| 252 | 1250 | 1600 | 2500 |
- Dielectric dissipation factor (tanδ): tanδ ≤0.005 under 10 kV and 1.05 Ur/√3 voltage
More Information
View our technical papers:
Brochure for IEEE Bushings
Brochure for IEC Bushings